Permaculture is an approach to designing human settlements and perennial agricultural systems that mimics the relationships found in natural ecologies. It was first developed by Australians Bill Mollison and David Holmgren and their associates during the 1970s in a series of publications. The word permaculture is a portmanteau of permanent agriculture, as well as permanent culture.

The intent was that, by rapidly training individuals in a core set of design principles, those individuals could design their own environments and build increasingly self-sufficient human settlements — ones that reduce society's reliance on industrial systems of production and distribution that Mollison identified as fundamentally and systematically destroying Earth's ecosystems.

While originating as an agro-ecological design theory, permaculture has developed a large international following. This "permaculture community" continues to expand on the original ideas, integrating a range of ideas of alternative culture, through a network of publications, permaculture gardens, intentional communities, training programs, and internet forums. In this way, permaculture has become both a design system and a culture of rewilding the human species.